analysis: Implement `CheckBlobsGenerated` RPC
To accommodate generated file detection for a set of specified files in
a repository, the CheckBlobsGenerated RPC has been implemented.
Generated file detection is performed though go-enry using heuristics
on the file path and the blob contents. The RPC supports multiple file
checks via streaming multiple requests containing batches of one or more
files. File check results are streamed back to the client in chunks with
at least one response message per received request.
Related: #5695 (closed)
Edited by Justin Tobler